retlehs/quien: A better WHOIS lookup tool · GitHub

A better WHOIS lookup tool. Interactive TUI with tabbed views for WHOIS, DNS, Mail, SSL/TLS, HTTP headers, and tech stack detection.

brew tap retlehs/tap
brew install retlehs/tap/quien

Or with Go:

go install github.com/retlehs/quien@latest

# Interactive prompt
quien

# Domain lookup (interactive TUI)
quien example.com

# IP address lookup
quien 8.8.8.8

# JSON output
quien --json example.com

• RDAP-first lookup With WHOIS fallback for broader TLD coverage
• IANA Referral For automatic WHOIS server discovery
• exploring the tech stack Includes WordPress plugins, JS/CSS frameworks, and external services parsed from HTML
• ip lookup With misuse of contacts via reverse DNS, network information and RDAP
• automatic retry with exponential backoff on all lookups
• JSON subcommand For scripting: quien dns, quien mail, quien tls, quien http, quien stack, quien all

tip: if you want quien To change your default WHOIS tool, you can add an alias to your shell configuration:

Add Queen as an agent skill so agents use it for domain and IP lookups:

npx skills add retlehs/quien